Grading screening unit for tea screening machine

Abstract

The invention belongs to the technical field of processing of agricultural and sideline products, relates to a tea screening machine, in particular to a grading screening unit for the tea screening machine, and solves the technical problem that the grading screening standards of the tea screening machine are unadjustable. The grading screening unit comprises a box; the lower portion of one side of the box is provided with a transverse outlet in a strip shape. The grading screening unit is characterized in that a plurality of screening units arranged within the box are transversely distributed on the inner side of the transverse outlet and abutted to the inner wall of the box, a screening outlet is formed between each adjacent two of the screening units, and the screening units can transversely move along the transverse outlet under the action of external force. The grading screening unit has the advantages that the design is reasonable, a grading standard of tea can be adjusted optionally by transversely moving the screening units, a screening standard can be adjusted by changing an included angle of first and second panels of each screening unit, operations are simple, control is easy, and popularization and application are easy.

Description

technical field [0001] The invention belongs to the technical field of agricultural and sideline products processing, and relates to a tea screening machine, in particular to a grading screening device of the tea screening machine. Background technique [0002] Tea screening machine is a kind of equipment for grading and classifying tea according to the standard of tea weight. The tea leaves enter the sieve bed through the feed inlet, and under the action of the fan, the tea leaves enter the air duct. Due to the difference in weight, the heavier tea leaves fall into the tea discharge outlet closer to the fan, and the lighter tea leaves fall into the air duct. Into the tea outlet far away from the fan. In order to classify tea leaves more accurately, existing tea screening machines are often designed with a lot of grading chambers. These grading chambers are often directly welded on the sieving machine, or integrated with the sieving machine, so that the grading chamber cann...

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Problems solved by technology

[0004] Although the above solution changes the wind force by changing the direction of the windshield, so as to adjust the standard of tea classification according to the specific situation, it is difficult to adjust the direction of the windshield, and it is difficult for novices to grasp, and the tea may fall directly on the windshield On the one hand, it affects the effect of tea grading, the design is unreasonable, the production efficiency is low, and the practicability is poor

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